OBJECTIVE To explore the risk assessment mechanism of nosocomial infections in hospitalized patients and implement the prevention and control measures so as to reduce the incidence of nosocomial infections.METHODS A total of 793 patients with nosocomial infections who were hospitalized from May 2010 to May 2013 were chosen as the experimental group,while 1 000 patients without nosocomial infections were randomly selected as the control group.The risk factors including the age,illness condition,length of hos...